The Department of Energy’s National Energy Technology Laboratory has released a report on the potential to geologically store carbon dioxide under federal lands. The report says that federal lands available for lease could store anywhere from 125 billion to 375 billion tons of carbon dioxide. One potential hurdle of storing CO2 emissions under federal lands is the location of CO2 sources; 65 percent of U.S. CO2 emissions are produced east of the Mississippi River, while over 80 percent of the federal land storage sites are west of the river.